Help bad knees with hyperextension issues by trying these yoga poses that focus on building leg muscle and tendon strength. View a step-by-step demonstration in this free video on therapeutic yoga. Expert: Noa Spector-Flock Bio: Noa Spector-Flock teaches yoga classes throughout Pinellas County, Florida. Filmmaker: Christopher Rokosz Series Description: Now you can help yourself heal faster, cope with chronic pain and keep illnesses at bay with these therapeutic yoga techniques that address a variety of conditions. Learn from a professional yoga instructor in this free video series.